The compiler and runtime can often answer a question faster than a human can. Rather than seek out a senior programmer and ask them “will it work if I do this?”, a good programmer will just try it and see if it works before bringing their problem to someone else.

I’m not sure that I’m a “good” programmer, but I definitely work on the basis that it’s better to ask for forgiveness, rather than permission. Also, I can often be heard saying, “why not suck it and see?”